Photo, january 1957 Yves Klein during the exhibition "Proposte monocrome, epoca blu", Galleria Apollinaire
Photo, 1968 Rotraut in front of the Relief Portrait of Arman (PR 1) during the exhibition "Yves Klein", Louisiana Museum
Photo, ca. 1960 Yves Klein and Rotraut with Ci-gît l'Espace [Here Lies Space] (RP 3) and the Sponge Relief (RE 20)